4/5 please help thank you.

4. A squash ball with a mass of 85.0 g is travelling 27.5 m/s east. It is struck * 1 point by a racquet that applies a force 970 N west. The ball and the racquet are in contact for 2.20 ms. The impulse of the tennis ball is 2.34 kg.m/s [west] 2.13 kg.m/s [west] ( 2.34 x10*3 kg.m/s [west) O 2.13 x 10*3 kg.m/s [west] 5. A 95.0 kg hockey player moving at +12.0 m/s crashes into a second * 1 point stationary hockey player. After the collision, the two skaters moves as a unit at +4.50 m/s. In the collision, the impulse received by the second hockey player was +4.28 x 10*2 kg.m/s O +7.13 x 10*2 kg.m/s